TWI762355B - Image capturing unit, camera module and electronic device - Google Patents

Abstract

An image capturing unit includes an imaging element and a double-shot injection-molded optical folding element that are adjacent to each other. The imaging element is configured for an imaging light to pass through. The double-shot injection-molded optical folding element includes a first part and a second part. The first part is made of transparent material. The first part has an incident surface, an emitting surface and a reflective surface. The incident surface faces an object side, while the emitting surface faces an image side; both of them are configured for the imaging light to pass through. The reflective surface is located between the incident surface and the emitting surface, and the reflective surface is configured to reflect the imaging light. The second part is made of opaque material, and the second part is fixed at periphery of the first part. The supporting portion is configured to provide support of the double-shot injection-molded optical folding element. The supporting portion maintains the double-shot injection-molded optical folding element in a predetermined position corresponding to the imaging element through mechanism assembly.

Description

Imaging devices, camera modules and electronic devices

The present invention relates to an imaging device, a camera module and an electronic device, in particular to an imaging device and a camera module suitable for electronic devices.

With the improvement of semiconductor process technology, the performance of electronic photosensitive elements has been improved, and the pixel size can be reduced. Therefore, optical lenses with high imaging quality have become an indispensable part. In addition, with the rapid development of science and technology, the application range of mobile phone devices equipped with optical lenses is wider, and the requirements for optical lenses are also more diverse.

In recent years, electronic products have been developing towards thinness and lightness. However, traditional optical lenses have been unable to meet the needs of miniaturization and high imaging quality at the same time, especially telephoto lenses. The known telescopic head has the disadvantages of too long total length, insufficient imaging quality or too large volume, so it cannot meet the current market demand. Therefore, the size of a single direction can be reduced by making the optical lens have the configuration of turning the optical axis, thereby reducing the overall volume. However, in order to achieve the configuration of the optical axis inversion, the existing optical lens still needs to additionally design a mounting structure to accommodate the optical axis inversion element, and the optical axis inversion element cannot be directly assembled.

Therefore, how to improve the optical lens to directly assemble the optical axis turning element to achieve the feasibility of realizing the turning optical lens, so as to meet the current demand for high specifications of electronic devices, has become an important issue in the current related fields.

In view of the above-mentioned problems, the present invention discloses an imaging device, a camera module and an electronic device, which are helpful for directly assembling the optical axis turning element to realize the feasibility of turning the optical configuration.

An imaging device disclosed in an embodiment of the present invention includes at least one imaging element and a dichroic output optical turning element. The at least one imaging element is used for passing an imaging light. The dichroic output optical turning element is adjacent to the at least one imaging element. The dichroic output optical turning element includes a first part and a second part. The first part is made of transparent material. The first part has a light incident surface, a light emitting surface and a reflection surface. The light incident surface faces the object side and is used for the imaging light to pass through. The light-emitting surface faces the image side and is used for passing the imaging light. The reflecting surface is located between the light incident surface and the light exit surface, and is used for reflecting the imaging light. The second part is made of an opaque material, and the second part is fixed to the periphery of the first part. The second part includes a bearing portion. The resting portion is used to provide support for the bichromatic outgoing optical turning element. The bearing portion keeps the bichromatic outgoing optical turning element at a preset position corresponding to the at least one imaging element through mechanical assembly.

According to the imaging device, the camera module and the electronic device disclosed in the above-mentioned embodiments, the bichromatic outgoing optical turning element can be in physical contact with the adjacent elements and provide a supporting function by mechanical assembly, so as to realize the turning camera module. feasible solution.

The above description of the content of the present invention and the description of the following embodiments are used to demonstrate and explain the principle of the present invention, and provide further explanation of the scope of the patent application of the present invention.

The detailed features and advantages of the present invention are described in detail below in the embodiments, and the content is sufficient to enable any person skilled in the relevant art to understand the technical content of the present invention and implement it accordingly, and according to the content disclosed in this specification, the scope of the patent application and the drawings , any person skilled in the related art can easily understand the related objects and advantages of the present invention. The following examples further illustrate the point of the present invention in detail, but do not limit the scope of the present invention in any point of view.

The present invention provides an imaging device comprising at least one imaging element and a dichroic outgoing optical turning element, wherein the dichroic outgoing optical turning element can have the function of turning the light path. The dichroic output optical turning element is adjacent to the at least one imaging element. Wherein, the at least one imaging element may be located on the object side or the image side of the dichroic output optical turning element.

The at least one imaging element is used for passing an imaging light. Wherein, the number of the at least one imaging element may be multiple. Wherein, the at least one imaging element may also include a movable element. Thereby, an optical configuration that can adjust the focus position can be provided, so as to reduce the difficulty of driving. Please refer to FIG. 1 , which shows a third imaging element 13c that can move between the second imaging element 13b and the imaging surface 12 according to the first embodiment of the present invention.

The dichroic output optical turning element includes a first part and a second part. The first part is made of transparent material and the second part is made of opaque material. Wherein, the transparent material of the first part and the opaque material of the second part may each comprise a plastic material. Specifically, the first part can comprise a transparent plastic material, and the second part can comprise a black opaque plastic material; thereby, the higher mechanical strength of the second part of the black plastic material can be used for assembly , so as to prevent the first part of the transparent plastic material from directly contacting other components, thereby avoiding extrusion deformation or scratching of the first part of the transparent plastic material, and ensuring the surface quality of the optical surfaces of the other components. The above description takes the first part of the transparent plastic material and the second part of the black plastic material as examples, but the present invention is not limited thereto. Wherein, the bi-color injection optical turning element can be integrally formed by secondary injection molding; thereby, a molding method with higher dimensional accuracy of the bi-color injection optical turning element can be provided. Wherein, the bi-color outgoing optical turning element can be formed by forming the transparent first part first, and then forming the opaque second part; or, the bi-color outgoing optical turning element can also be formed by forming the opaque second part first, and then forming the transparent first part; The invention is not limited to the molding sequence of the dichroic injection optical turning element. Wherein, each of the first part and the second part may have at least one injection mark; thereby, a faster injection rate and higher molding yield can be provided.

The first part has a light incident surface, a light emitting surface and a reflection surface. The light incident surface faces the object side and is used for the imaging light to pass through. The light-emitting surface faces the image side and is used for passing the imaging light. The reflective surface is located between the light-incident surface and the light-emitting surface, and the reflective surface is used for reflecting the imaging light, so as to provide the light path turning function of the bichromatic outgoing optical turning element. The light incident surface, the light output surface and the reflection surface can all belong to optical surfaces, wherein the optical surfaces can be smooth optical planes, optical spherical surfaces or optical aspherical surfaces with refractive power.

When the at least one imaging element is located on the object side of the dichroic outgoing optical turning element, the at least one imaging element can correspond to the light incident surface; thereby, an assembly configuration in the object side direction can be provided. When the at least one imaging element is located on the image side of the dichroic emitting optical turning element, the at least one imaging element and the light-emitting surface can correspond to each other; thereby, an image-side assembly configuration can be provided. When the number of the at least one imaging element is multiple, two of the imaging elements may be located on the object side and the image side of the dichroic output optical turning element, respectively; thereby, the assembly in the two directions of the object side and the image side can be provided. configuration method.

The second part is fixed to the outer periphery of the first part. Wherein, the first part may further have a concave structure. The concave-concave structure is concave from the outer periphery of the first part to the inside, and the second part is partially filled in the concave-concave structure; thereby, the effect of shielding the stray light inside the dual-color output optical turning element can be achieved, so as to improve the imaging quality and increase the first Bonding efficiency when one part and the second part are formed. Please refer to FIG. 17 , which shows a concave-recessed structure 344 recessed from the outer periphery of the first portion 34 a to the inner portion according to the third embodiment of the present invention. Wherein, the second part of the dichromatic outgoing optical turning element can be disposed on at least one of the light incident surface, the light emitting surface and the reflective surface, and the second part can have at least one opening on the side corresponding to the at least one surface ; Thereby, the second part can be used as a light-shielding hole on the optical surface, and an optical light-transmitting area can be defined. Wherein, the at least one opening may be non-circular; thereby, the configuration of the openings with high shading efficiency can be maintained in a limited space. Please refer to FIG. 13 , which shows a plurality of non-circular openings 346 according to the third embodiment of the present invention, wherein the openings 346 correspond to the light incident surface 341 and the light exit surface 342 respectively.

The second part includes a bearing portion. The resting portion is used to provide support for the bichromatic outgoing optical turning element. The so-called support for providing the bichromatic outgoing optical turning element can be that the bichromatic outgoing optical turning element is in physical contact with its adjacent elements through the bearing portion; thereby, the bearing portion can provide the bichromatic outgoing optics with mechanical assembly function and bearing function. Turn the component, and realize the feasible solution of turning the camera module. The bearing portion is mechanically assembled so that the dichroic outgoing optical turning element can be maintained at a preset position corresponding to the at least one imaging element by means of interconnection or mutual alignment; thereby, the dichromatic outgoing optical turning element can be used instead of The use of assembly components to reduce assembly steps and reduce product manufacturing costs. Wherein, the bearing portion and the at least one imaging element can bear against each other; thereby, the distance between the bichromatic outgoing optical turning element and the at least one imaging element can be stabilized, so as to avoid collision during assembly. Wherein, the preset position may be a fixed relative position; alternatively, the preset position may also be a corresponding range, and the bichromatic output optical turning element and the at least one imaging element can be within this range internal relative motion. Please refer to FIG. 2 and FIG. 15 , which are respectively illustrated in the first embodiment and the third embodiment according to the present invention, which are kept in a fixed preset position relative to the first imaging element 13a and the second imaging element 13b. The outgoing optical deflection element 14 and the bichromatic outgoing optical deflection element 34 remain in a fixed preset position relative to the imaging element 33 . Referring to FIG. 8 , there is shown a bichromatic outgoing optical turning element 24 that is rotatable at a predetermined position within a corresponding range according to the second embodiment of the present invention.

The bearing portion may have a pair of positive structures. The bichromatic outgoing optical turning element can be aligned with the center of the at least one imaging element by the alignment structure; thereby, the alignment structure can be used to reduce assembly tolerance and further improve the strength of the assembly structure. Wherein, the alignment structure may have a flat surface and an inclined surface. The flat surface and the inclined surface can be used to reduce the skew and offset between the two-color output optical turning element and the at least one imaging element; thereby, the actual imaging light can be more closely matched to the design value, so as to reduce optical aberration and provide higher optical specifications. Please refer to FIG. 2 , FIG. 6 and FIG. 7 , which illustrate the alignment structure 1471 and its flat surface 1471 a and inclined surface 1471 b according to the first embodiment of the present invention. Please refer to FIG. 14 and FIG. 16, which illustrate the alignment structure 3471 and its flat surface 3471a and inclined surface 3471b according to the third embodiment of the present invention.

According to the imaging device disclosed in the present invention, an arc level difference structure can be further included. The circular arc level difference structure may be disposed on at least one of the light incident surface, the light exit surface and the reflecting surface, and the circular arc level difference structure may have an arc-shaped outline formed with the center of the at least one surface as the center of the circle. Thereby, the surface precision of the optical surface can be effectively controlled, so as to reduce the molding tolerance of the optical surface. Please refer to FIG. 9 and FIG. 10 , which illustrate the arc level difference structure 25 according to the second embodiment of the present invention. Please refer to FIG. 16 , which shows a circular arc level difference structure 35 according to the third embodiment of the present invention.

The maximum viewing angle of the imaging device is FOV, which can satisfy the following conditions: 5 [degrees] < FOV < 40 [degrees]. Thereby, a telephoto imaging device with a small angle of view can be provided.

The Abbe number of the first part of the dichromatic exit optical turning element is V, which can satisfy the following conditions: 40 ≤ V ≤ 65. Thereby, optical chromatic aberration can be reduced to provide higher imaging quality. Wherein, the first portion may comprise a low optical dispersion material.

The above technical features of the imaging device of the present invention can be configured in combination to achieve corresponding effects.

According to the above-mentioned embodiments, specific embodiments are provided below and described in detail with reference to the drawings.

<First Embodiment>

Please refer to FIGS. 1 to 7 , wherein FIG. 1 is a three-dimensional schematic view of a camera module according to a first embodiment of the present invention, FIG. 2 is a side sectional view of the camera module of FIG. 1 , and FIG. 3 is a An exploded schematic view of the camera module of FIG. 1 is shown, FIG. 4 is a cut-away exploded schematic view of the camera module of FIG. 1 , and FIG. 5 is a partial view of the camera module of FIG. 1 with its first imaging element cut away FIG. 6 is a cutaway perspective view of the camera module of FIG. 1 and its second imaging element is cut away, and FIG. 7 is a schematic view of the two-color output optical turning element of the camera module of FIG. A partially cutaway perspective view.

In this embodiment, the camera module 1 includes a frame body (not shown), an imaging device 10 and an electronic photosensitive element 105 . The imaging device 10 is installed in the casing. The imaging device 10 has an optical axis 11 and an imaging plane 12 . The imaging device 10 includes three imaging elements 13 and a dichroic output optical turning element 14 . An imaging light (not shown) can be imaged on the imaging surface 12 after passing through the imaging element 13 and the dichroic output optical turning element 14 along the optical axis 11 . The electronic photosensitive element 105 is disposed on the imaging surface 12 to convert the optical information imaged on the imaging surface 12 into electronic information.

Specifically, the imaging element 13 includes a first imaging element 13a, a second imaging element 13b and a third imaging element 13c. The first imaging element 13a includes a first lens system 131a and a first fixing ring 132a. The first fixing ring 132a fixes the first lens system 131a on the dichroic outgoing optical turning element 14 . The second imaging element 13b includes a second lens system 131b, a second fixing ring 132b and a second lens barrel 133b. The second lens system 131b is located in the second lens barrel 133b. The second fixing ring 132b is disposed on the image side of the second lens system 131b to fix the second lens system 131b in the second lens barrel 133b. The third imaging element 13c includes a third lens system 131c, a third fixing ring 132c and a third lens barrel 133c. The third lens system 131c is located in the third lens barrel 133c. The third fixing ring 132c is disposed on the image side of the third lens system 131c to fix the third lens system 131c in the third lens barrel 133c. The first lens system 131a, the second lens system 131b, and the third lens system 131c can each be, for example, a set of imaging systems formed by one lens, multiple lenses, one lens combined with an aperture, or multiple lenses combined with an aperture. The imaging light passes through. For the convenience of drawing, the first lens system 131a of this embodiment takes one lens as an example, the second lens system 131b takes multiple lenses with an aperture as an example, the third lens system 131c takes multiple lenses as an example, and the second lens Part of the contour lines of the multiple lenses of the system 131b and the third lens system 131c are omitted, but the invention is not limited to this. The dichroic exit optical turning element 14 has the function of turning the optical path, and is adjacent to the first imaging element 13a and the second imaging element 13b, wherein the first imaging element 13a is located on the object side of the dichroic exiting optical turning element 14, and the second imaging element 13b is located on the image side of the dichroic exit optical turning element 14 . After the imaging light passes through the first imaging element 13a along the optical axis 11, it is turned at the dichroic exit optical turning element 14, then passes through the second imaging element 13b and the third imaging element 13c, and is finally imaged on the imaging surface 12 for The electronic photosensitive element 105 is converted into electronic imaging information. The third imaging element 13c can move between the second imaging element 13b and the imaging plane 12 to adjust and focus on the imaging plane 12 .

The bi-color injection optical turning element 14 includes a first part 14a and a second part 14b which are integrally formed by secondary injection molding, wherein the first part 14a is made of transparent plastic material and has a first injection mark 140a, and the second part 14a is made of a transparent plastic material. The portion 14b is made of opaque black plastic material and has a second injection mark 140b.

The first part 14a further has a light incident surface 141, a light exit surface 142 and a reflection surface 143, wherein the light entrance surface 141, the light exit surface 142 and the reflection surface 143 are all optical surfaces. The light incident surface 141 faces the object side of the imaging device 10 and is used for passing the imaging light, and corresponds to the first imaging element 13a. The light emitting surface 142 faces the image side of the imaging device 10 for allowing the imaging light to pass through, and corresponds to the second imaging element 13b. The reflective surface 143 is located between the light-incident surface 141 and the light-emitting surface 142, and the reflective surface 143 is used to reflect the imaging light, so as to provide the optical path turning function of the bichromatic outgoing optical turning element 14, as shown by the turned optical axis 11 in FIG. 2 . .

The second portion 14b is fixed on the outer periphery of the first portion 14a and is at least partially disposed on the light incident surface 141 and the light exit surface 142 . The second portion 14b has an opening 146 on two sides corresponding to the light incident surface 141 and the light exit surface 142, respectively. The openings 146 serve as light-shielding holes and define optical light-transmitting regions of the light-incident surface 141 and the light-emitting surface 142 .

The second portion 14b includes two bearing portions 147 . The supporting portion 147 is used to provide support for the dichroic outgoing optical turning element 14 , so that the dichroic outgoing optical turning element 14 is in physical contact with the first imaging element 13 a and the second imaging element 13 b respectively through the supporting portion 147 . Specifically, the bearing portion 147 adjacent to the light incident surface 141 is connected to and bears on the first imaging element 13a through mechanical assembly, and the other bearing portion 147 adjacent to the light exit surface 142 is connected through mechanical assembly and bears on the first imaging element 13a. The second imaging element 13b keeps the dichroic output optical turning element 14 in a fixed preset position relative to the first imaging element 13a and the second imaging element 13b. In the mechanical assembly of this embodiment, the bearing portion 147 is in physical contact with the first fixing ring 132a of the first imaging element 13a and the second lens barrel 133b of the second imaging element 13b as an example, but the invention is not limited thereto.

An accommodating space S is surrounded by the bearing portion 147 close to the object side. The first lens system 131a is located in the accommodating space S. The first fixing ring 132a is located in the accommodating space S and is disposed on the object side of the first lens system 131a. The first fixing ring 132a bears against the bearing portion 147 close to the object side, so as to fix the first lens system 131a in the accommodating space S, so that the first imaging element 13a is kept at a position relative to the dichroic exit optical turning element 14. A fixed preset position.

The bearing portion 147 near the image side has a pair of positive structures 1471 . The dichroic outgoing optical turning element 14 and the second imaging element 13b are aligned with each other at the center through the alignment structure 1471 . Specifically, the alignment structure 1471 has a flat surface 1471a and an inclined surface 1471b. The second lens barrel 133b has an alignment structure 1331b at one end close to the object side. The flat surface 1471a and the inclined surface 1471b correspond to the shape of the alignment structure 1331b, so as to fit with the alignment structure 1331b of the second lens barrel 133b, thereby reducing the difference between the dichroic exit optical turning element 14 and the second lens barrel 133b of the second imaging element 13b. The skew and offset between the two, so that the second imaging element 13b is kept at a fixed preset position relative to the dichroic exit optical turning element 14 . The above-mentioned alignment structure 1471 performs center alignment between the second imaging element 13b and the dichroic outgoing optical turning element 14 with the plane 1471a and the inclined plane 1471b corresponding to the shape of the alignment structure 1331b, but the present invention is not limited thereto.

The maximum viewing angle of the imaging device 10 is FOV, which satisfies the following condition: FOV=18.6 [degrees].

The Abbe number of the first portion 14a of the dichroic exit optical turning element 14 is V, which satisfies the following condition: V=56.

<Second Embodiment>

Please refer to FIGS. 8 to 10 , wherein FIG. 8 is a side cross-sectional view of a camera module according to a second embodiment of the present invention, and FIG. 9 is a three-dimensional schematic diagram illustrating a part of the imaging device of the camera module of FIG. 8 , and FIG. 10 is a three-dimensional schematic diagram illustrating another perspective view of the imaging device of the camera module of FIG. 8 .

In this embodiment, the camera module 2 includes a frame body 201 , a rotating element 202 , a coil 203 , a magnet 204 , an imaging device 20 and an electronic photosensitive element 205 . The rotating element 202 is disposed on the frame body 201 . The coil 203 is provided in the frame body 201 . The magnet 204 is adjacent to the coil 203 and is disposed on the imaging device 20 . The imaging device 20 is located in the frame body 201 and is connected to the frame body 201 through the rotating element 202 .

The imaging device 20 has an optical axis 21 and an imaging surface 22 . The imaging device 20 includes an imaging element 23 and a dichroic output optical turning element 24 . An imaging light (not shown) can be imaged on the imaging surface 22 after passing through the dichroic output optical turning element 24 and the imaging element 23 in sequence along the optical axis 21 . The electronic photosensitive element 205 is disposed on the imaging surface 22 to convert the optical information imaged on the imaging surface 22 into electronic information.

Specifically, the imaging element 23 includes a lens system 231 , two fixing rings 232 , a lens barrel 233 and a filter element 234 . The lens system 231 is located within the lens barrel 233 . The lens system 231 can be, for example, a set of imaging systems formed by one lens, multiple lenses, one lens with an aperture, or multiple lenses with an aperture, for the imaging light to pass through. For the convenience of drawing, the lens system 231 of the present embodiment uses multiple lenses with an aperture as an example, and the multiple lenses of the lens system 231 omit part of the contour lines, but the present invention is not limited to this. The fixing rings 232 are respectively disposed on the object side and the image side of the lens system 231 to fix the lens system 231 in the lens barrel 233 . The filter element 234 is disposed between the lens system 231 and the imaging surface 22 to filter out light in a specific wavelength band. The bichromatic outgoing optical turning element 24 has the function of turning the optical path, and is adjacent to the object side of the imaging element 23 . The imaging light enters the bichromatic output optical turning element 24 along the optical axis 21 and is turned, then passes through the imaging element 23, and finally forms an image on the imaging surface 22 for the electronic photosensitive element 205 to convert into electronic imaging information.

The bi-color injection optical turning element 24 includes a first part 24a and a second part 24b which are integrally formed by secondary injection molding, wherein the first part 24a is made of transparent plastic material and has a first injection mark 240a, and the second part 24a is made of a transparent plastic material. The portion 24b is made of opaque black plastic material and has a second injection mark 240b.

The first part 24a further has a light incident surface 241, a light exit surface 242 and a reflection surface 243, wherein the light entrance surface 241, the light exit surface 242 and the reflection surface 243 are all optical surfaces. The light incident surface 241 faces the object side of the imaging device 20 and is used for passing the imaging light. The light-emitting surface 242 faces the image side of the imaging device 20 for allowing the imaging light to pass through, and corresponds to the imaging element 23 . The reflective surface 243 is located between the light incident surface 241 and the light emitting surface 242, and the reflective surface 243 is used to reflect the imaging light to provide the optical path turning function of the bichromatic outgoing optical turning element 24, as shown by the turned optical axis 21 in FIG. 8 . .

The second portion 24b is fixed to the outer periphery of the first portion 24a and is at least partially disposed on the reflective surface 243 . The second portion 24b has an opening 246 on a side corresponding to the reflective surface 243 . The second portion 24b includes a bearing portion 247 . The supporting portion 247 is used to provide the support for the dichroic outgoing optical turning element 24 , so that the dichroic outgoing optical turning element 24 is in physical contact with the rotating element 202 through the supporting portion 247 . Specifically, the rotating element 202 is, for example, a sphere, and the bearing portion 247 is connected and supported on the rotating element 202 by mechanical assembly, so as to support the bichromatic outgoing optical turning element 24 so that the bichromatic outgoing optical turning element 24 can rotate The element 202 is a rotation center rotatably maintained at a preset position within a corresponding range, and corresponds to the imaging element 23 , thereby adjusting the imaging position of the imaging light on the imaging surface 22 . The above-mentioned rotating element 202 uses a sphere as an example for rotating the bichromatic outgoing optical turning element 24, but the present invention is not limited to this. In addition, in the mechanical assembly of this embodiment, the wall surface of the bearing portion 247 is in point contact with the spherical rotating element 202 as an example, but the invention is not limited to this.

The second portion 24b further includes an accommodating groove 248 . The magnet 204 is disposed in the accommodating groove 248 . The magnet 204 corresponds to the coil 203 , and can be driven by the coil 203 to drive the rotation of the bichromatic outgoing optical turning element 24 . However, the present invention is not limited thereto. In some embodiments, the coil can also be disposed in the accommodating groove, and the magnet can be disposed in the frame correspondingly.

The imaging device 20 further includes three circular arc level difference structures 25 . The arc level difference structure 25 is respectively disposed on the light incident surface 241 , the light exit surface 242 and the reflection surface 243 . Two of the circular arc level difference structures 25 located on the light incident surface 241 and the light exit surface 242 are convex steps, and the other circular arc level difference structures 25 located on the reflective surface 243 are concave steps, but the invention is not limited thereto. The arc level difference structures 25 each have a plurality of arc-shaped contours formed with the geometric centers of the light incident surface 241 , the light-emitting surface 242 and the reflecting surface 243 as the center of the circle, and the arc-shaped contours are spaced from each other. However, the present invention is not limited thereto. In some embodiments, the circular arc level difference structure may also have a complete circular contour formed with the geometric center of the light incident surface, the light emitting surface and the reflective surface as the center of the circle.

The maximum viewing angle of the imaging device 20 is FOV, which satisfies the following condition: FOV = 26.9 [degrees].

The Abbe number of the first portion 24a of the dichroic exit optical turning element 24 is V, which satisfies the following condition: V=64.2.

<Third Embodiment>

Please refer to FIGS. 11 to 16 , wherein FIG. 11 is a three-dimensional schematic view of a camera module according to a third embodiment of the present invention, FIG. 12 is a side cross-sectional view of the camera module of FIG. 11 , and FIG. 13 is a 11 is a partial exploded schematic view, FIG. 14 is a schematic perspective view showing a part of the camera module of FIG. 11 and its imaging element is partially cut away, and FIG. 15 is a schematic diagram of the camera module of FIG. 11. It is a cross-sectional view from above, and FIG. 16 is a schematic perspective view of a partial cutaway of the bi-color output optical turning element of the camera module of FIG. 11 .

In this embodiment, the camera module 3 includes a frame body (not shown), an imaging device 30 and an electronic photosensitive element 305 . The imaging device 30 is provided in the casing. The imaging device 30 has an optical axis 31 and an imaging plane 32 . The imaging device 30 includes an imaging element 33 and a dichroic output optical turning element 34 . An imaging light (not shown) can be imaged on the imaging surface 32 after passing through the dichroic output optical turning element 34 and the imaging element 33 in sequence along the optical axis 31 . The electronic photosensitive element 305 is disposed on the imaging surface 32 to convert the optical information imaged on the imaging surface 32 into electronic information.

Specifically, the imaging element 33 includes a lens system 331 , two fixing parts 332 and a lens barrel 333 . The lens system 331 is located within the lens barrel 333 . The fixing portion 332 is disposed on the object side of the lens system 331 to fix the lens system 331 in the lens barrel 333 . The lens system 331 can be, for example, a set of imaging systems formed by one lens, multiple lenses, one lens with an aperture, or multiple lenses with an aperture, for the imaging light to pass through. For the convenience of drawing, the lens system 331 of the present embodiment uses multiple lenses as an example, and the multiple lenses of the lens system 331 omit part of the outline, but the present invention is not limited to this. The lens barrel 333 of the present embodiment has two opposite cut edges (not marked) and is non-circular, and the lens system 331 and the fixing portion 332 are both matched with the non-circular lens barrel 333 to be non-circular, wherein the fixed portion 333 is non-circular. The portion 332 is two arc-shaped bodies cut from a circular fixing ring. Therefore, in this embodiment, the number of the fixing portions 332 is presented as two, but the present invention is not limited to this; in some embodiments, the fixing portions may also be two arcs formed after a liquid fixing material is solidified. shape entity. The bichromatic outgoing optical turning element 34 has the function of turning the light path, and is adjacent to the object side of the imaging element 33 . The imaging light enters the bichromatic exit optical turning element 34 along the optical axis 31 and is turned, then passes through the imaging element 33, and is finally imaged on the imaging surface 32 for the electronic photosensitive element 305 to convert into electronic imaging information.

The bi-color injection optical turning element 34 includes a first part 34a and a second part 34b integrally formed by secondary injection molding, wherein the first part 34a is made of transparent plastic material and has a first injection mark 340a, and the second part 34a is made of a transparent plastic material. The portion 34b is made of opaque black plastic material and has a second injection mark 340b.

The first portion 34a further has a light incident surface 341, a light exit surface 342, a reflection surface 343 and a concave structure 344, wherein the light incident surface 341, the light exit surface 342 and the reflection surface 343 are all optical surfaces. The light incident surface 341 faces the object side of the imaging device 30 and is used for passing the imaging light. The light emitting surface 342 faces the image side of the imaging device 30 for allowing the imaging light to pass through, and corresponds to the imaging element 33 . The reflective surface 343 is located between the light-incident surface 341 and the light-emitting surface 342, and the reflective surface 343 is used to reflect the imaging light, so as to provide the optical path turning function of the bichromatic outgoing optical turning element 34, as shown by the turned optical axis 31 in FIG. 12 . . The concave-recess structure 344 is located between the light incident surface 341 and the light exit surface 342 and is opposite to one side of the reflection surface 343 . The concave-recessed structure 344 is concave from the outer periphery of the first portion 34a to the inside (in the direction toward the reflection surface 343 ).

The second portion 34b is fixed on the outer periphery of the first portion 34a, partially filled in the concave-recess structure 344, and at least partially disposed on the light incident surface 341 and the light exit surface 342. The second portion 34b has a non-circular opening 346 on both sides corresponding to the light incident surface 341 and the light exit surface 342, respectively. Specifically, each of the openings 346 has two arc edges and two cut edges (not numbered otherwise) connected between the two arc edges. The opening 346 serves as a light-shielding hole and defines an optical light-transmitting area of the light-incident surface 341 and the light-emitting surface 342 .

The second portion 34b includes a bearing portion 347 . The supporting portion 347 is used to provide the support for the dichroic outgoing optical turning element 34 , so that the bichromatic outgoing optical turning element 34 is in physical contact with the imaging element 33 through the supporting portion 347 . Specifically, the bearing portion 347 is connected to and bears on the imaging element 33 through mechanical assembly, so that the dichroic outgoing optical turning element 34 is kept in a fixed preset position relative to the imaging element 33 . The mechanical assembly in this embodiment is exemplified by the bearing portion 347 physically contacting the lens barrel 333 of the imaging element 33 , but the invention is not limited to this.

The bearing portion 347 has a pair of positive structures 3471 . The dichroic output optical turning element 34 is aligned with the imaging element 33 by the alignment structure 3471 at the center of each other. Specifically, the alignment structure 3471 has a flat surface 3471a and an inclined surface 3471b. The lens barrel 333 has an alignment structure 3331 at one end close to the object side. The flat surface 3471a and the inclined surface 3471b correspond to the shape of the alignment structure 3331, so as to fit with the alignment structure 3331 of the lens barrel 333, thereby reducing the skew and offset between the dichroic exit optical turning element 34 and the lens barrel 333 of the imaging element 33 , so that the imaging element 33 remains in a fixed preset position relative to the dichroic exit optical turning element 34 . The above-mentioned alignment structure 3471 performs center alignment between the imaging element 33 and the dichroic output optical turning element 34 with the flat surface 3471a and the inclined surface 3471b corresponding to the shape of the alignment structure 3331, but the present invention is not limited thereto.

The imaging device 30 further includes a circular arc level difference structure 35 . The arc level difference structure 35 is disposed on the light emitting surface 342 . The arc level difference structure 35 is a convex level. The arc level difference structure 35 has a plurality of arc-shaped contours formed with the geometric center of the light emitting surface 342 as the center of the circle, and the plurality of arc-shaped contours are spaced apart from each other.

The maximum viewing angle of the imaging device 30 is FOV, which satisfies the following condition: FOV=10.1 [degrees].

The Abbe number of the first portion 34a of the dichroic exit optical turning element 34 is V, which satisfies the following condition: V=44.3.

<Fourth Embodiment>

Please refer to FIGS. 17 and 18 , wherein FIG. 17 is a perspective view of one side of an electronic device according to a fourth embodiment of the present invention, and FIG. 18 is a perspective view of the other side of the electronic device of FIG. 17 .

In this embodiment, the electronic device 4 is a smart phone. The electronic device 4 includes a plurality of camera modules, a flash module 41, a focus assist module 42, an image signal processor 43 (Image Signal Processor), a display module (user interface) 44 and an image software processor (not shown otherwise). Show).

These camera modules include an ultra-wide-angle camera module 40a, a high-resolution camera module 40b, and a telephoto camera module 40c. The telephoto camera module 40c is the camera module 1 of the first embodiment, but the present invention is not limited thereto, and the telephoto camera module 40c can also be, for example, the camera modules of the other embodiments described above.

The ultra-wide-angle camera module 40a has the function of accommodating multiple scenes. FIG. 19 is a schematic diagram of capturing an image with the ultra-wide-angle camera module 40a.

The high-resolution camera module 40b has the functions of high resolution and low distortion. The high-pixel camera module 40b can further capture part of the area in the image of FIG. 19 . FIG. 20 is a schematic diagram of an image captured by the high-pixel camera module 40b.

The telephoto camera module 40c has a high magnification function. The telephoto camera module 40c can further capture part of the area in the image of FIG. 20 . FIG. 21 is a schematic diagram of capturing an image with the telephoto camera module 40c. The maximum angle of view (FOV) of the camera module 1 corresponds to the angle of view in FIG. 21 .

When the user shoots the subject, the electronic device 4 uses the ultra-wide-angle camera module 40a, the high-pixel camera module 40b or the telephoto camera module 40c to gather light to capture the image, activate the flash module 41 to fill in the light, and use The subject distance information provided by the focus assisting module 42 is used for fast focusing, and the image signal processor 43 performs image optimization processing to further improve the image quality generated by the camera module and provide the zoom function at the same time. The focus assist module 42 can use an infrared or laser focus assist system to achieve fast focusing. The display module 44 can use a touch screen, and cooperate with the diversified functions of the image software processor to perform image shooting and image processing (or can use a physical shooting button to shoot). The image processed by the image software processor can be displayed on the display module 44 .

<Fifth Embodiment>

Please refer to FIG. 22 , which is a perspective view of one side of an electronic device according to a fifth embodiment of the present invention.

In this embodiment, the electronic device 5 is a smart phone. The electronic device 5 includes the camera module 1 of the first embodiment, a camera module 50a, a camera module 50b, a camera module 50c, a camera module 50d, a camera module 50e, a camera module 50f, a camera module 50g, a camera The module 50h, the flash module 51, the image signal processor, the display device and the image software processor (not shown). Camera module 1, camera module 50a, camera module 50b, camera module 50c, camera module 50d, camera module 50e, camera module 50f, camera module 50g and camera module 50h are all configured in the electronic device 5 , and the display device is disposed on the other side of the electronic device 5 .

The camera module 1 is a telephoto camera module, the camera module 50a is a telephoto camera module, the camera module 50b is a telephoto camera module, the camera module 50c is a telephoto camera module, and the camera module 50d is a telephoto camera module. The wide-angle camera module, the camera module 50e is a wide-angle camera module, the camera module 50f is an ultra-wide-angle camera module, the camera module 50g is an ultra-wide-angle camera module, and the camera module 50h is a fly-time camera module. Time of Flight (ToF) camera module. The camera module 1, the camera module 50a, the camera module 50b, the camera module 50c, the camera module 50d, the camera module 50e, the camera module 50f and the camera module 50g in this embodiment have different viewing angles, so that the The electronic device 5 can provide different magnifications to achieve the shooting effect of optical zoom. In addition, the camera module 1 and the camera module 50a are telephoto camera modules configured with optical turning elements. In addition, the camera module 50h can obtain the depth information of the image. The above-mentioned electronic device 5 includes a plurality of camera modules 1, 50a, 50b, 50c, 50d, 50e, 50f, 50g, 50h as an example, but the number and configuration of the camera modules are not intended to limit the present invention. When the user shoots the subject, the electronic device 5 uses the camera module 1, the camera module 50a, the camera module 50b, the camera module 50c, the camera module 50d, the camera module 50e, the camera module 50f, the camera module The group 50g or the camera module 50h collects light to capture an image, activates the flash module 51 to fill light, and performs subsequent processing in a manner similar to the foregoing embodiment, which will not be repeated here.

The imaging device and camera module of the present invention are not limited to be applied to smart phones. The imaging device and camera module can be applied to the mobile focusing system according to the requirements, and have the characteristics of excellent aberration correction and good imaging quality. For example, imaging devices and camera modules can be applied to three-dimensional (3D) image capture, digital cameras, mobile devices, digital tablets, smart TVs, network monitoring equipment, driving recorders, reversing developing devices, and more. In electronic devices such as lens devices, identification systems, somatosensory game consoles and wearable devices. The electronic device disclosed above is only an example to illustrate the practical application of the present invention, and is not intended to limit the application scope of the imaging device and the camera module of the present invention.

Although the present invention is disclosed above by the aforementioned embodiments, it is not intended to limit the present invention. Anyone who is familiar with similar techniques can make some changes and modifications without departing from the spirit and scope of the present invention. Therefore, this The scope of patent protection of the invention shall be determined by the scope of the patent application attached to this specification.

1, 2, 3, 40a, 40b, 40c, 50a, 50b, 50c, 50d, 50e, 50f, 50g, 50h: camera module 201: Frame 202: Rotating element 203: Coil 204: Magnet 105, 205, 305: Electronic photosensitive elements 10, 20, 30: Imaging device 11, 21, 31: Optical axis 12, 22, 32: Imaging plane 13, 23, 33: Imaging elements 13a: First imaging element 131a: First lens system 132a: first fixing ring 13b: Second imaging element 131b: Second lens system 132b: Second fixing ring 133b: Second lens barrel 1331b: Alignment Structure 13c: Third imaging element 131c: Third lens system 132c: The third fixing ring 133c: Third barrel 231, 331: Lens System 232: Retaining ring 233, 333: lens barrel 234: filter element 332: Fixed part 3331: Alignment structure 14, 24, 34: Two-color output optical turning element 14a, 24a, 34a: Part 1 140a, 240a, 340a: the first injection mark 141, 241, 341: light incident surface 142, 242, 342: light-emitting surface 143, 243, 343: Reflective surface 14b, 24b, 34b: Part II 140b, 240b, 340b: the second injection mark 146, 246, 346: Opening 147, 247, 347: bearing part 1471, 3471: Alignment structure 1471a, 3471a: Flat 1471b, 3471b: Bevel 248: accommodating groove 25, 35: Arc step structure 4, 5: Electronic device 41, 51: Flash module 42: Focus Assist Module 43: Image signal processor 44: Display Module S: accommodating space

FIG. 1 is a schematic perspective view of a camera module according to a first embodiment of the present invention. FIG. 2 is a side cross-sectional view of the camera module of FIG. 1 . FIG. 3 is an exploded schematic view of the camera module of FIG. 1 . FIG. 4 is a cutaway exploded schematic view of the camera module of FIG. 1 . FIG. 5 is a partially cut-away perspective view of the camera module of FIG. 1 and its first imaging element. FIG. 6 is a partially cut-away perspective view of the camera module of FIG. 1 and its second imaging element. FIG. 7 is a partially cut-away perspective view of the bi-color output optical turning element of the camera module of FIG. 1 . 8 is a side cross-sectional view of a camera module according to a second embodiment of the present invention. FIG. 9 is a three-dimensional schematic diagram illustrating a partial imaging device of the camera module of FIG. 8 . FIG. 10 is a three-dimensional schematic diagram showing another view of the imaging device of a part of the camera module of FIG. 8 . FIG. 11 is a schematic three-dimensional view of a camera module according to a third embodiment of the present invention. FIG. 12 is a side cross-sectional view of the camera module of FIG. 11 . FIG. 13 is a partial exploded schematic view of the camera module of FIG. 11 . FIG. 14 is a partially cut-away perspective view of the camera module of FIG. 11 and its imaging element. FIG. 15 is a top cross-sectional view of the camera module of FIG. 11 . FIG. 16 is a partially cutaway perspective view of the dichroic output optical turning element of the camera module of FIG. 11 . 17 is a schematic perspective view of one side of an electronic device according to a fourth embodiment of the present invention. FIG. 18 is a schematic perspective view of another side of the electronic device of FIG. 17 . FIG. 19 is a schematic diagram of capturing an image with an ultra-wide-angle camera module. FIG. 20 is a schematic diagram of capturing an image with a high-resolution camera module. FIG. 21 is a schematic diagram of capturing images with the telephoto camera module. FIG. 22 is a schematic perspective view of one side of an electronic device according to a fifth embodiment of the present invention.

1: Camera module

105: Electronic photosensitive element

10: Imaging device

11: Optical axis

12: Imaging surface

13: Imaging element

13a: First imaging element

13b: Second imaging element

13c: Third imaging element

14: Two-color exit optical turning element

14a: Part 1

140a: The first injection mark

14b: Part II

140b: The second injection mark

S: accommodating space

Claims (15)

An imaging device, comprising: at least one imaging element for passing an imaging light; and a bichromatic outgoing optical turning element adjacent to the at least one imaging element, wherein the bichromatic outgoing optical turning element comprises: a first part, consisting of It is made of transparent material, wherein the first part has: a light incident surface, facing the object side and used for the imaging light to pass through; a light exit surface, facing the image side and used for the imaging light to pass through; and a reflective surface, located in Between the light incident surface and the light exit surface and used to reflect the imaging light; and a second part, made of opaque material, wherein the second part is fixed on the periphery of the first part, and the second part includes: A bearing portion is used to provide support for the bichromatic outgoing optical turning element, wherein the bearing portion keeps the bichromatic outgoing optical turning element at a preset position corresponding to the at least one imaging element through mechanical assembly. The imaging device according to claim 1, wherein the two-color injection optical turning element is integrally formed by secondary injection molding. The imaging device according to claim 1, wherein the second part of the dichroic emitting optical turning element is disposed on at least one of the light incident surface, the light emitting surface and the reflective surface, and the second part is corresponding to One side of the at least one surface has at least one opening. The imaging device of claim 3, wherein the at least one opening is non-circular. The imaging device according to claim 1, wherein the bearing portion and the at least one imaging element bear against each other. The imaging device according to claim 5, wherein the at least one imaging element is located on the object side of the dichroic output optical turning element, and the at least one imaging element and the light incident surface correspond to each other. The imaging device of claim 5, wherein the at least one imaging element is located on the image side of the dichroic output optical turning element, and the at least one imaging element and the light emitting surface correspond to each other. The imaging device as claimed in claim 5, wherein the supporting portion has an alignment structure, and the dual-color emitting optical turning element is aligned with the center of the at least one imaging element by the alignment structure. The imaging device of claim 8, wherein the alignment structure has a flat surface and an inclined surface, and the flat surface and the inclined surface are used for reducing skew and offset between the dichroic output optical turning element and the at least one imaging element. The imaging device according to claim 1, further comprising a circular arc level difference structure, wherein the circular arc level difference structure is disposed on at least one of the light incident surface, the light exit surface and the reflective surface, and the circular arc level difference structure is The level difference structure has an arc-shaped contour formed with the center of the at least one surface as the center of the circle. The image forming apparatus of claim 1, wherein each of the first portion and the second portion has at least one injection mark. The imaging device of claim 1, wherein the maximum viewing angle of the imaging device is FOV, which satisfies the following condition: 5 [degrees] < FOV < 40 [degrees]. The imaging device according to claim 1, wherein the Abbe number of the first part of the dichroic output optical turning element is V, which satisfies the following condition: 40 ≤ V ≤ 65. A camera module, comprising: the imaging device according to claim 1; and an electronic photosensitive element disposed on an imaging surface of the imaging device. An electronic device, comprising: the camera module according to claim 14.

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